国产a毛片,123区国产精品,国产精品久久久亚洲一区,午夜精品中午字幕一区二区三区

XRF analyzers from Elvatech is a right choice for hundreds of applications. Elvatech Ltd. Company is an R&D enterprise based in Kiev, Ukraine. Since 1991 it has been engaged in scientific instrument-making specializing in design and manufacture of electronic, vacuum, and spectrometric equipment, automated data collection and processing systems, and analytical software. It's main products （XRF analyzer and metal analyzers） are used in industrial, research and academic laboratories worldwide.